Portion of a watch housing



FIG. 1 is a front view of a portion of a watch showing our new design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing the band, the side button regions and the unshaded area therewithin and the remainder of the watch is for illustrative purposes only and forms no part of the claimed design. The unshown back of the watch housing forms no part of the claimed design. 

The ornamental design for a portion of a watch housing, as shown and described. 